So I worked on this over the last couple of days and fixed several performance issues in the latest 15.4 release, especially when it comes to handling many added connections. Feel free to try it again, it should handle better now.

The only possibility I see here is that this is a Windows 10 system with an older SSHD if mobaxterm doesn’t work anymore as there were some changes on which SSHD executable XPipe will use for mobaxterm.

About the X11, I am not aware of any changes that could change that behaviour. If no parent connection of the LXC container has that explicitly enabled, it shouldn’t use that.

For both issues, feel free to post on GitHub and Discord and I can help troubleshoot this

When you say slow, what part do you refer to? I am always looking to improve on the performance front